package com.itheima.shop.service;

import com.itheima.shop.dto.UserMessage;
import com.itheima.shop.entity.User;

public interface UserService {
	
	public UserMessage Login(String username,String password);
	
	public User checkUsername(String username);
	
	public UserMessage register(User user);
	
	public UserMessage activate(String code);
}
